Johnson Lake Dam

TR-CALHOUN HOLLOW-CLEAR CREEK· Montgomery, Missouri· Earth· 40 ft tall
Low Hazard Irrigation Private

Key Takeaway

Johnson Lake Dam is classified as low hazard in Missouri. Its primary use is irrigation.

Physical Details

Dam Height 40 ft (taller than 89.7% in MO)
Dam Length800 ft
Dam TypeEarth
Max Storage147 acre-ft
Normal Storage147 acre-ft
Surface Area5 acres
Drainage Area0 sq mi
Max Discharge0 cfs
NID IDMO11473

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: February 1, 2022
State Regulated: Yes
Regulatory Agency: Dam and Reservoir Safety Program

Ownership

ROGER JOHNSON

Private

Nearby Dams

Bethel Lake Dam

Montgomery, MO

Low Hazard 52 ft

Deeker Farm Lake Dam

Montgomery, MO

High Hazard 46 ft

Seper Lake Dam

Montgomery, MO

Low Hazard 40 ft

Borgers

Montgomery, MO

Low Hazard 25 ft

Noble Lake Dam- North

Montgomery, MO

Low Hazard 30 ft

Noble Lake Dam- South

Montgomery, MO

Low Hazard 30 ft

Easterday Dam East

Montgomery, MO

Low Hazard 25 ft

Easterday Dam

Montgomery, MO

High Hazard 34 ft

Frequently Asked Questions

What is the hazard classification of Johnson Lake Dam?

Johnson Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Johnson Lake Dam?

Johnson Lake Dam is owned by ROGER JOHNSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Johnson Lake Dam?

Johnson Lake Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Johnson Lake Dam?

Johnson Lake Dam has a dam height of 40 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Johnson Lake Dam last inspected?

Johnson Lake Dam was last inspected on February 1, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.